This booklet updates NIPCC report Nature, Not Human Activity, Rules the Climate (2008) and contains new results: 1. It defends NIPCC against false claims that IPCC climate models are "consistent" with observed temperature trends. The central issue is the cause of global warming: Is it natural or is it manmade? 2. It demonstrates that because of their chaotic character none of IPCC's climate models can be validated against observations and used to predict future temperatures. 3. It presents new thinking on Climategate, the Hockeystick graph -- and multiple evidence against the claimed surface warming underlying the IPCC conclusion of AGW.